OBJ Export (Pivot Points Wrong)
First off, you need to correct the origins in blender. While the four cubes are selected, right click to bring up this panel.

Then navigate to 'set origin' and select the 'origin to 3d cursor'. This will set the four cubes origins to the cursor position and you should be good to go! Then inside unity, make sure to set tool handle position to 'pivot'.
Hopefully this works!